... 3500mm, special for large pile low price Punching Pile Driver,CK series.Punching pile driver is a kind of ... important drill machine for cast-in-place pile construction. Its composed of main winch, assistant winch ... the earth and rock of hole inside or pile into wall of hole, or make residue suspend ... Thats why so many construction company choose punching pile driver. At the same time, around hole wall ...